Abstract: A heat recovery variable-frequency multi-split heat pump system and a control method thereof. The system includes an outdoor unit and at least two indoor units. The system is a three-pipe heating recovery multi-split heat pump system designed on the basis of a four-way reversing valve, and one indoor unit thereof is provided with two electronic expansion valves and two heat exchangers so that any indoor unit in the system can operate independently under three working conditions of refrigeration, heating or heat recovery dehumidification. Under multi-split condition, the system can operate under six working conditions, namely, the full-refrigeration working condition, the full-heating working condition, the common-heat-recovery working condition, the common-heat-recovery-dehumidification working condition, the heat recovery dehumidification-refrigeration-combination working condition and the heat recovery dehumidification-heating-combination working condition.

Abstract: This disclosure relates to the field of projection display technology, and particularly to a projection screen and a projection display system so as to improve the uniformity of brightness throughout the projection screen. There is an anti-reflection coating arranged in a target area on a light incidence side surface of the projection screen to increase transmittivity in the target area, where the target area refers to an area where an incidence angle of projected light beams on the projection screen is above an angle threshold, and the projected light beams are light beams emitted by a projector.

Abstract: The disclosure provides an apparatus for controlling liquid crystal display brightness, the apparatus pre-obtaining a zone backlight value corresponding to a zone image data block according to grayscale values; if the zone backlight value is above a first threshold, multiplying the pre-obtained zone backlight value with a backlight value gain coefficient, which is more than 1, to a obtain backlight value to which a gain is applied, of a backlight zone corresponding to the zone image data block, outputting the backlight value to which the gain is applied, to a driver circuit of backlight source in the backlight zone to control brightness of the backlight source in the backlight zone as a result of driving; if the zone backlight value is below a second threshold, compensating for the grayscale values of the pixels in the zone image data block using compensation coefficients, each of which is more than 1.

Abstract: The disclosure provides a fluorescent wheel, including a fluorescent region and a transmission region; the fluorescent region has fluorescence powder for emitting fluorescence under excitation by excitation laser; and the transmission region is for transmitting laser; the fluorescent wheel is for diffusing at least laser to be transmitted. Using fluorescent wheel to diffuse laser enables laser transmission meanwhile removing speckles by diffusion, sparing a separate speckle-removing component, improving light processing efficiency of fluorescent wheel.

Abstract: The disclosure discloses a mobile terminal and a rapid charging method, where the mobile terminal includes a microprocessor configured to detect voltage of a battery core thereof upon detecting that the USB interface is connected with the DC-charging power source adaptor, if the voltage of the battery core is in a range [S1, S2] delimited by preset DC-charging thresholds, to calculate a target charging voltage value Vout from the voltage of the battery core, the maximum terminal voltage supported by the battery as well as at least one of a resistance value on a charging line, a resistance value on a circuit board of the mobile terminal, an inner resistance of the battery, and to send the target charging voltage value Vout to the DC-charging power source adaptor to control the DC-charging power source adaptor to output charging voltage to DC-charge the battery.

Abstract: The disclosure provides a method for displaying a picture on a terminal, and the terminal, wherein the method includes: receiving a picture display instruction; entering a rotation preview mode in which the original picture to which the picture display instruction points is rotated at different angles into rotation preview pictures, and the rotation preview pictures are displayed in each sub-area of an interface of the terminal respectively, wherein the sub-areas are at least two sub-areas into which a picture display area of the terminal is divided; receiving a selection instruction of a user; and exiting the rotation preview mode, and entering a picture display mode in which a rotation preview picture in a target sub-area to which the selection instruction points is displayed in the picture display area, and the rotation preview pictures in the other sub-areas are stopped from being displayed.

Abstract: The disclosure discloses a light source device and a projection display device. The light source device includes a laser for generating laser light, a fluorescent wheel, a filter wheel and a control unit, wherein the fluorescent wheel includes at least one reflection section, and at least one transmission section capable of transmitting the laser light; and at least one phosphor capable of being excited by the laser light to emit yellow light, and at least one phosphor capable of being excited by the laser light to emit green light are attached on the surface of the reflection section; the filter wheel includes at least one transparent section, at least one red filter section and at least one green filter section.

Abstract: An example optical module includes: an optical splitter configured to split a received incident optical signal into a first optical signal and a second optical signal; a wavelength filter sheet configured to receive the second optical signal to reflect a first part of the second optical signal to generate reflected light, and to transmit a second part of that to generate transmitted light; a first photo detector configured to convert the reflected light into an electric signal; a second photo detector configured to convert the transmitted light into an electric signal; and an MCU configured to obtain the first detected signal and the second detected signal, to determine the difference in optical power between the reflected light and the transmitted light, and to determine from the difference in optical power and a specified standard difference in optical power whether the wavelength of the second optical signal is shifted.

Abstract: The present disclosure provides a light conversion film and a preparation method thereof, and a liquid crystal display device. The light conversion film comprises a first substrate, a thin film layer, a quantum dot layer in which quantum dots are distributed, and a second substrate, which are all successively stacked, wherein said thin film layer is a transparent sheet having an electric field on a surface thereof, and said quantum dots are orderly arrayed due to said electric field.

Abstract: Disclosed embodiments provide a heat dissipation controlling method and an apparatus thereof for a laser projection equipment. The method includes: obtaining an ambient temperature and a compensating value of a rotating speed of a fan when a laser projection equipment is currently powered on; determining a first rotating speed value of the fan of the laser projection equipment according to the ambient temperature and first preset rotating speed information; and determining an initial rotating speed value of the fan for the current power on according to the first rotating speed value and the compensating value; taking the initial rotating speed value as a current rotating speed value; and controlling operation of the fan using the current rotating speed value to dissipate heat from the laser projection equipment. The embodiments of the present disclosure can enable promptly satisfying the demand for heat dissipation when the laser projection equipment is powered on.

Abstract: Embodiments of the disclosure provide a method and apparatus for controlling a startup bootstrap program of an intelligent TV set, and relate to the field of an embedded system so as to shorten a period of time for startup boot while initializing a screen normally. In the disclosure, after a system is powered on, a first task of initializing a screen in a startup bootstrap program is executed, and the length of preset time required for executing the first task is obtained, wherein the startup bootstrap program is a bootstrap program for initializing pieces of software/hardware of the system; executing a second initialization task unrelated to initializing the screen in the startup bootstrap program is executed while the first task is being executed, thus addressing the problem in the related art.

Abstract: The disclosure provides an apparatus and method for relaying by a mobile device and a storage medium, the apparatus including: one or more processors; and a memory, where: the memory stores therein one or more computer readable program codes configured to be executed by the one or more processors to perform operations of: connecting with a wireless access point through a station node of Wi-Fi; enabling a softAP node of Wi-Fi so that logon information of the mobile device is broadcasted, and one or more electronic devices are connected through the softAP node; enabling a packet forwarding function to enable a data packet to be forwarded between different nodes of Wi-Fi in the mobile device; and sending configuration information of packet forwarding to a Wi-Fi module so that a data packet is forwarded between the station node and the softAP node.

Abstract: The application discloses a rapid charging method and a mobile terminal, which are proposed for a power source adaptor outputting dynamically adjustable voltage, where voltage of a battery core is divided into several intervals, and further in a segmented constant-current-like charging mode, a volt value of charging voltage output by the power source adaptor is adjusted dynamically according to an interval in which the core voltage of the battery in the mobile terminal while the battery is being charged lies, and the battery is DC-charged directly using the charging voltage output by the power source adaptor.

Abstract: The application disclose a mobile terminal, a method for charging by a power source adapter for charging directly and a method for charging a mobile terminal, where firstly the power adaptor for charging directly is configured to communicate wirelessly with the mobile terminal, and then a strategy to identity the type of charging is designed in the mobile terminal dependent upon differently configured communication pins of a different charging device, so that the mobile terminal identifies automatically the type of the external device. Also a specialized rapid charging mode is designed for the power adaptor for charging directly, the battery of the mobile terminal being charged routinely is charged directly at large current by charging voltage output by the power adaptor for charging directly, and the volt value of the charging voltage is adjusted dynamically according to the varying voltage of the battery.

Abstract: The disclosure provides an apparatus for controlling liquid crystal display brightness, the apparatus pre-obtaining a zone backlight value corresponding to a zone image data block according to grayscale values; if the zone backlight value is above a first threshold, multiplying the pre-obtained zone backlight value with a backlight value gain coefficient, which is more than 1, to a obtain backlight value to which a gain is applied, of a backlight zone corresponding to the zone image data block, outputting the backlight value to which the gain is applied, to a driver circuit of backlight source in the backlight zone to control brightness of the backlight source in the backlight zone as a result of driving; if the zone backlight value is below a second threshold, compensating for the grayscale values of the pixels in the zone image data block using compensation coefficients, each of which is more than 1.

Abstract: The present disclosure relates to the field of optical and projecting technology, and particularly to a DMD assembly, DLP optical engine and DLP projection device.

Abstract: An apparatus for controlling liquid crystal display brightness includes: a zone image grayscale determining section configured to determine grayscale values of pixels in a zone image data block under a predetermined rule according to a received image signal; a zone backlight value pre-obtaining section configured to pre-obtain a zone backlight value corresponding to the zone image data block according to the grayscale values; a zone backlight value gain section configured, when it is determined that the zone backlight value is above a first threshold, to multiply the zone backlight value with a backlight value gain coefficient to obtain a backlight value to which a gain is applied, corresponding to the zone image data block, and to output the backlight value to which the gain is applied, to a driver circuit of backlight source in a backlight zone corresponding to the zone image data block, to control brightness of the backlight source in the corresponding backlight zone as a result of driving, where the backl

Abstract: Disclosed are a voice control method, device and terminal, and the method includes: after a terminal has been triggered into voice control mode, receiving input voice data and obtaining corresponding speech text according to the voice data; matching the speech text with an interface word list corresponding to a current operating interface, wherein the interface word list includes text information of the current operating interface; in response to determining that the speech text matches an interface word list successfully, obtaining in the current operating interface an operation link which corresponds to the speech text; and performing an operation corresponding to the operation link.

Abstract: Some embodiments of the disclosure provide an LED light emitting device for a display device, and a display device, relate to the field of display technologies. The LED light emitting device includes a quantum dot film, a reflective filter layer, and at least one LED lamp, wherein the quantum dot film is arranged between the at least one LED lamp and the reflective filter layer; the at least one LED lamp is configured to emit light to excite a quantum dot material encapsulated in the quantum dot film to generate white backlight; and the reflective filter layer is configured to reflect light in a preset band and to transmit light outside the preset band, wherein the light in the preset band is light in a part of a band of the light emitted by the at least one LED lamp.

Abstract: The application discloses a power source adaptor for charging directly and a mobile terminal, where the power source adaptor for charging directly is timed to communicate with a mobile terminal which is a charging object, in the UART communication mode to obtain a change in voltage of a battery in the mobile terminal, adjusts dynamically a volt value of charging voltage output by the power source adaptor for charging directly according to the varying voltage of the battery, and charges directly the battery in the mobile terminal using the charging voltage.